/Engine/Plugins/Editor/ContentBrowser/ContentBrowserAssetDataSource/Source/ContentBrowserAssetDataSource/Public/ContentBrowserAssetDataSource.h
Attempt to mark the given item as private (NotExternallyReferenceable).
True if the item was marked private, false otherwise
virtual bool PrivatizeItem ( const [FContentBrowserItemData](API\Editor\ContentBrowserData\FContentBrowserItemData) & InItem )